platform.c

   1 /* $Id: platform.c,v 1.5 2010/11/05 01:36:15 dtucker Exp $ */
   2
   3 /*
   4  * Copyright (c) 2006 Darren Tucker.  All rights reserved.
   5  *
   6  * Permission to use, copy, modify, and distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18
  19 #include "config.h"
  20 #include "platform.h"
  21
  22 #include "openbsd-compat/openbsd-compat.h"
  23
  24 void
  25 platform_pre_listen(void)
  26 {
  27 #ifdef LINUX_OOM_ADJUST
  28         /* Adjust out-of-memory killer so listening process is not killed */
  29         oom_adjust_setup();
  30 #endif
  31 }
  32
  33 void
  34 platform_pre_fork(void)
  35 {
  36 #ifdef USE_SOLARIS_PROCESS_CONTRACTS
  37         solaris_contract_pre_fork();
  38 #endif
  39 }
  40
  41 void
  42 platform_post_fork_parent(pid_t child_pid)
  43 {
  44 #ifdef USE_SOLARIS_PROCESS_CONTRACTS
  45         solaris_contract_post_fork_parent(child_pid);
  46 #endif
  47 }
  48
  49 void
  50 platform_post_fork_child(void)
  51 {
  52 #ifdef USE_SOLARIS_PROCESS_CONTRACTS
  53         solaris_contract_post_fork_child();
  54 #endif
  55 #ifdef LINUX_OOM_ADJUST
  56         oom_adjust_restore();
  57 #endif
  58 }
  59
  60 /*
  61  * This gets called before switching UIDs, and is called even when sshd is
  62  * not running as root.
  63  */
  64 void
  65 platform_setusercontext(struct passwd *pw)
  66 {
  67 #ifdef WITH_SELINUX
  68         /* Cache selinux status for later use */
  69         (void)ssh_selinux_enabled();
  70 #endif
  71
  72 #ifdef USE_SOLARIS_PROJECTS
  73         /* if solaris projects were detected, set the default now */
  74         if (getuid() == 0 || geteuid() == 0)
  75                 solaris_set_default_project(pw);
  76 #endif
  77 }
  78
  79 /*
  80  * This gets called after we've established the user's groups, and is only
  81  * called if sshd is running as root.
  82  */
  83 void
  84 platform_setusercontext_post_groups(struct passwd *pw)
  85 {
  86 #ifdef WITH_SELINUX
  87         ssh_selinux_setup_exec_context(pw->pw_name);
  88 #endif
  89 }
  90
  91 char *
  92 platform_krb5_get_principal_name(const char *pw_name)
  93 {
  94 #ifdef USE_AIX_KRB_NAME
  95         return aix_krb5_get_principal_name(pw_name);
  96 #else
  97         return NULL;
  98 #endif
  99 }